Celebrity chef Rocco DiSpirito has maintained his 50-pound weight loss for several years with “The Negative Calorie Diet,” a plan that enables you to enjoy delicious foods while losing up to 10 pounds in 10 days.

In The Negative Calorie Diet, DiSpirito says you can accelerate weight loss and slow down the aging process by eating “negative calorie foods,” which are foods that naturally help you to burn body fat and boost your metabolism.

“These whole foods are packed with fiber, so not only do you tend to eat smaller portions of them naturally, but you also stay fuller, longer,” wrote Rocco.

“Some even offer what is known as a ‘thermogenic effect,’ effectively boosting your metabolism to increase the rate at which your body burns energy,” explained DiSpirito.” And you can eat as much of them as you want!”

Rocco has successfully maintained his weight loss for since 2013 despite being around delicious food all day long.

DiSpirito said eating a balanced, nutrient-dense diet has curbed his tendency to overeat.

Rocco DiSpirito lost 50 pounds with his ‘Pound A Day Diet.’ (Instagram)

“My recipes were carefully engineered using low-calorie density foods that are nutritionally dense and voluminous,” said DiSpirito. “That means they are really good for you and there’s a lot of it, thanks to water and fiber — the magic pill for weight loss.”

Rocco said the most important he has learned during his weight loss journey and while writing his book is that you can stay in shape while eating your favorite foods.

“Healthy and delicious are no longer mutually exclusive,” said DiSpirito, who also wrote the bestseller Now Eat This! Diet.